Real Time Clocks

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X1B000301000212, EPSON

Real Time Clock Peripherals, Epson

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Y2K Compliant +3V or +5V Operation 64-Bit Silicon Serial Number Power-Control Circuitry Supports System Power-On from Date/Time Alarm or Key Closure 32kHz Output for Power Management Crystal-Select Bit Allows RTC to Operate with 6pF or 12.5pF Crystal SMI Recovery Stack 242 Bytes Battery-Backed NV RAM Auxiliary Battery Input RAM Clear Input Century Register Date Alarm Register Compatible with Existing BIOS for Original DS1287 Functions Available as Chip (DS1685) or Stand-Alone Encapsulated DIP (EDIP) with Embedded Battery and Crystal (DS1687) Timekeeping Algorithm Includes Leap-Year Compensation Valid Through 2099 Applications Embedded Systems Network Hubs, Switches, Routers Security Systems Utility Meters

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DS1339AU+, Maxim Integrated

Drop-In Replacement for DS1339 Real-Time Clock (RTC) Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap-Year Compensation Up to 2200 Two Time-of-Day Alarms Programmable Square-Wave Output Supports Crystals with Up to 60kΩ ESR Maintains Time Even During Power Outage with Backup Supply Pin Automatic Power-Fail Detect and Switch Circuitry Trickle-Charge Capability Supports VCC from 1.8V to 5V Oscillator Stop Flag Oscillator Runs Down to 1.15V Interfaces with a Wide Range of Microcontrollers I2C Serial Interface Applications Consumer Electronics (Set-Top Box, Digital Recording, Network Appliance) Handhelds (GPS, POS Terminals) Medical (Glucometer, Medicine Dispenser) Office Equipment (Fax/Printers, Copier) Other (Utility Meter, Vending Machine, Thermostat, Modem) Telecommunications (Routers, Switches, Servers)

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DS3231M+, Maxim Integrated

Highly Accurate RTC With Integrated MEMS Resonator Completely Manages All Timekeeping Functions Complete Clock Calendar Functionality Including Seconds, Minutes, Hours, Day, Date, Month, and Year, with Leap-Year Compensation Up to Year 2100 Timekeeping Accuracy ±5ppm (±0.432 Second/Day) from -45°C to +85°C Footprint and Functionally Compatible to DS3231 Two Time-of-Day Alarms 1Hz and 32.768kHz Outputs Reset Output and Pushbutton Input with Debounce Digital Temp Sensor with ±3°C Accuracy +2.3V to +5.5V Supply Voltage Simple Serial Interface Connects to Most Microcontrollers Fast (400kHz) I2C Interface Battery-Backup Input for Continuous Timekeeping Low Power Operation Extends Battery-Backup Run Time Operating Temperature Range: (-40°C to +85°C) 8-Pin or 16-Pin SO Packages Applications Industrial Applications Power Meters

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DS1302+, Maxim Integrated

Real Time Clock with NV Memory, Integrated A range of real-time clock products from Maxim incorporating non-volatile RAM memory for data retention. The clock/calendar functions provide seconds, minutes, hours, day, date, month, and year information. The clocks generally operate in either the 12 or 24-hour format with an AM/PM indicator. Additional features may include watchdog timers, alarms and trickle-charging facilities for external back-up batteries; some devices are available which include an integrated crystal for the clock oscillator. Note Please note that any defect or non – conformance of this product must be discovered and reported to RS within 20 days of purchase.

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RV-3029-C3-TB-QA-Opt.B, Micro Crystal

Real Time Clock Peripherals, Micro Crystal

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RV-3049-C3-TA-QC-Opt.A, Micro Crystal

Real Time Clock Peripherals, Micro Crystal

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DS1307ZN+T&R, Maxim Integrated

Completely Manages All Timekeeping Functions Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100 56-Byte, Battery-Backed, General-Purpose RAM with Unlimited Writes Programmable Square-Wave Output Signal Simple Serial Port Interfaces to Most Microcontrollers I2C Serial Interface Low Power Operation Extends Battery Backup Run Time Consumes Less than 500nA in Battery-Backup Mode with Oscillator Running Automatic Power-Fail Detect and Switch Circuitry 8-Pin DIP and 8-Pin SO Minimizes Required Space Optional Industrial Temperature Range: -40°C to +85°C Supports Operation in a Wide Range of Applications

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DS1685S-5+, Maxim Integrated

Y2K Compliant +3V or +5V Operation 64-Bit Silicon Serial Number Power-Control Circuitry Supports System Power-On from Date/Time Alarm or Key Closure 32kHz Output for Power Management Crystal-Select Bit Allows RTC to Operate with 6pF or 12.5pF Crystal SMI Recovery Stack 242 Bytes Battery-Backed NV RAM Auxiliary Battery Input RAM Clear Input Century Register Date Alarm Register Compatible with Existing BIOS for Original DS1287 Functions Available as Chip (DS1685) or Stand-Alone Encapsulated DIP (EDIP) with Embedded Battery and Crystal (DS1687) Timekeeping Algorithm Includes Leap-Year Compensation Valid Through 2099 Applications Embedded Systems Network Hubs, Switches, Routers Security Systems Utility Meters

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DS1306+, Maxim Integrated

Real Time Clock with NV Memory, Integrated A range of real-time clock products from Maxim incorporating non-volatile RAM memory for data retention. The clock/calendar functions provide seconds, minutes, hours, day, date, month, and year information. The clocks generally operate in either the 12 or 24-hour format with an AM/PM indicator. Additional features may include watchdog timers, alarms and trickle-charging facilities for external back-up batteries; some devices are available which include an integrated crystal for the clock oscillator. Note Please note that any defect or non – conformance of this product must be discovered and reported to RS within 20 days of purchase.

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DS1308U-33+, Maxim Integrated

Compatible with Crystal ESR Up to 100kΩ Allows a Crystal to be Optimized for Cost and Space Low-Power Operation Extends Battery Backup Run Time Low Timekeeping Current of 250nA (typ) Automatic Power-Fail Detect and Switch Circuitry Completely Manages All Timekeeping Functions Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2400 External Clock Source for Synchronization Clock Reference (e.g., 32kHz, 50Hz/60Hz Powerline, GPS 1PPS) 56-Byte, Battery-Backed, General-Purpose RAM with Unlimited Writes Programmable Square-Wave Output Signal Simple Serial Port Interfaces with Most Microcontrollers I2C Serial Interface Industrial Temperature Range: -40°C to +85°C Supports Operation in a Wide Range of Applications Applications Consumer Electronics (Set-Top Box, Digital Recording, Network Appliance) Handhelds (GPS, POS Terminal) Medical (Glucometer, Medicine Dispenser) Office Equipment (Fax/Printer, Copier) Other (Utility Meter, Vending Machine, Thermostat, Modem) Telecommunications (Router, Switcher, Server)

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DS1337U+T&R, Maxim Integrated

Completely Manages All Timekeeping Functions Real-Time Clock (RTC) Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap-Year Compensation Valid Up to 2100 Two Time-of-Day Alarms Programmable Square-Wave Output Defaults to 32kHz on Power-Up Oscillator Stop Flag Interfaces with Most Microcontrollers I2C Serial Interface Surface-Mount Package with an Integrated Crystal (DC1337C) Saves Additional Space and Simplifies Design -40°C to +85°C Industrial Temperature Range Supports Operation in a Wide Range of Applications Applications Consumer Electronics (Set-Top Box, VCR/Digital Recording) Handhelds (GPS, POS Terminal, MP3 Player) Medical (Glucometer, Medicine Dispenser) Office Equipment (Fax/Printer, Copier) Other (Utility Meter, Vending Machine, Thermostat, Modem) Telecommunications (Router, Switcher, Server)

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New Items

X1B000301000212, EPSON

DS1687-3+, Maxim Integrated

DS1339AU+, Maxim Integrated

DS3231M+, Maxim Integrated

DS1302+, Maxim Integrated

RV-3029-C3-TB-QA-Opt.B, Micro Crystal

RV-3049-C3-TA-QC-Opt.A, Micro Crystal

DS1307ZN+T&R, Maxim Integrated

DS1685S-5+, Maxim Integrated

DS1306+, Maxim Integrated

DS1308U-33+, Maxim Integrated

DS1337U+T&R, Maxim Integrated

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